Hyperion

What you get

Everything LibreWolf gives you:

• No telemetry. Data collection is switched off and locked.
• uBlock Origin, installed automatically.
• Fingerprinting resistance and other privacy-hardened settings, on from the start.
• No sponsored suggestions, and Firefox accounts stay off unless you turn them on.
• Firefox's engine, add-ons and security fixes.

Plus Hyperion's own additions:

• Tab search. With vertical tabs, a search field sits above your tabs. Type in it and only the tabs whose title or address match stay in the list. Press Ctrl+Shift+F to jump to it, and Esc to clear it.
• Fast updates. Hyperion follows every LibreWolf release within hours, not days. See Updates.

To websites, Hyperion looks like Firefox, so it doesn't stand out.

Download

Windows

Windows 10 or 11.

• Installer for Intel and AMD PCs (x64)
• Installer for ARM PCs
• Portable versions, which run from any folder without installing: x64, ARM

Run the installer and follow its steps. Hyperion then keeps itself up to date.

macOS

macOS 10.15 or later. Hyperion is signed and notarized by Apple.

• For Macs with Apple silicon (M1 and later)
• For Macs with an Intel processor

Open the downloaded disk image and drag Hyperion to Applications. Hyperion then keeps itself up to date.

Linux

For x86-64 and ARM64.

Fedora and RHEL (dnf repository; updates come with your system updates):

sudo curl -fsSLo /etc/yum.repos.d/hyperion.repo https://download.hyperionhq.org/linux/hyperion.repo
sudo dnf install hyperion

Debian and Ubuntu (apt repository; updates come with your system updates):

sudo curl -fsSLo /usr/share/keyrings/hyperion.gpg https://download.hyperionhq.org/linux/hyperion.gpg
echo "deb [signed-by=/usr/share/keyrings/hyperion.gpg] https://download.hyperionhq.org/linux/apt stable main" | sudo tee /etc/apt/sources.list.d/hyperion.list
sudo apt update && sudo apt install hyperion

Any distribution (Hyperion keeps these up to date itself):

• AppImage: x86-64, ARM64. Make it executable and run it.
• Archive: x86-64, ARM64. Extract it somewhere you can write to, such as ~/.local/opt, and run hyperion.

Updates

Hyperion checks LibreWolf for new releases every few minutes. Each new release is rebuilt with Hyperion's additions for every platform, tested, signed and published.

Hyperion then updates the way Firefox does. It downloads updates in the background, usually as small partial updates rather than the whole browser, verifies their signature, and finishes when you restart it. Help › About Hyperion shows the update status and lets you check for updates yourself.

The dnf and apt packages update with the rest of your system instead.

Verify a download

Every release lists the SHA-256 checksum of each file in a SHA256SUMS file, signed with Hyperion's OpenPGP release key. The Windows and macOS builds are also code-signed.

Source code

Hyperion is LibreWolf's source code plus Hyperion's patches and branding, under the Mozilla Public License 2.0. Each release's complete source code is published next to its downloads.